Technical World Magazine, Volume 12Technical World Company, 1909 |
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Page 176
... rail and a copper brush on the locomotive . Normally the line circuit is closed and the opening of a switch , the breaking of a rail or the presence of a train , or even a handcar , in the block opens the circuit which sets off the cab ...
... rail and a copper brush on the locomotive . Normally the line circuit is closed and the opening of a switch , the breaking of a rail or the presence of a train , or even a handcar , in the block opens the circuit which sets off the cab ...
Page 179
... rail and the line wires , so that the ' phone can be used only when the engine is over a section of third rail . A current of only half an ampere is used on the line wire so that , according to Mr. La Croix , snow and ice do not affect ...
... rail and the line wires , so that the ' phone can be used only when the engine is over a section of third rail . A current of only half an ampere is used on the line wire so that , according to Mr. La Croix , snow and ice do not affect ...
Page 181
... Railway of England in 1906. By means of a complicated arrangement of electric circuits established through a third rail and a contact brush on the engine a bell is rung in the cab when the signals are against an approaching train . All ...
... Railway of England in 1906. By means of a complicated arrangement of electric circuits established through a third rail and a contact brush on the engine a bell is rung in the cab when the signals are against an approaching train . All ...
Contents
MAGAZINE | 586 |
Cover Design LEJAREN HILLER | 591 |
Men of SciencePORTRAITS | 605 |
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